Adjustable column form



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A'TTD RN EYS Patented Jan. 8, 1 952 ADJUSTABLE COLUMN FORM Takeo Sato,Honolulu, Territory of Hawaii Application June 14, 1948, Serial No.32,971

8 Claims'.

This invention relates to portable concrete forms of the type adapted tobe assembled in the field, removed after use, and reused and inparticular adjustableforms for casting concrete columns in place whereinthe columns may be square, or rectangular and substantially of any sizein cross section, or of any heighth.

The purpose of this invention is to provide portable concrete formswhich may readily be set up in thev field and readily removed in whichthe same parts may be used to form columns of different sizes.

Portable metal forms are necessarily heavy and when used for large andhigh columns it is diflicult to handle sections of portable forms now inuse. With this thought in mind this invention contemplates forms havinga plurality of vertically disposed sections in which the sections areformed of comparatively thin metal reinforced at the edges and at pointsintermediate of the edges with structural shapes so that the weightthereof is reduced to a minimum.

In assembling and dismantling portable concrete forms time is essentialand for this reason the usual bolts and nuts are objectionable, and toovercome this object the forms of this invention use studs with slotstherethrough and tapered keys that may be driven into the slots andwhich may readily be removed by tapping. l

In some cases it is also desirable to shore up the lower ends of columnforms and with this thought in mind this invention includes snoringblocks with sloping intermediate surfaces and studs and keys forsecuring sections of the blocks together. l

It is also desirable to provide extensions at the upper ends of columnforms for holding wood sections and to accomplish this the inventionincludes means for attaching uprights to the upper ends of the forms towhich boards may be attached.`

The object of this invention is, therefore, to provide a completeportable form for casting concrete columns in position that isrelatively flexible in that it may readily be adjusted to diierent sizesand shapes.

Another object of the invention is to provide a portable column formthat is adjustableand that may be set up and dismantled in acomparatively short time.

A further object of the invention is to provide y an adjustable portableconcrete form which is of a simple and economical construction.

With these and other objects and advantages in view the inventionconsists of the new and useful combination, construction, andarrangement of parts as hereinafter more fully described, set forth inthe claims appended hereto, and disclosed in the accompanying drawingsforming part hereof, wherein:

Figure 1 is a view showing a side elevation of a typical form with theattaching elements extending from the sides thereof and with partsbroken away.

Figure 2 is a cross section taken on line 2-2 of Figure l showing atypical section through the form with the parts assembled to cast asquare column.

Figure 3 is a similar section showing the parts set up to form arectangular-shaped column.

Figure 4 is a section similar to that shown in Figure 2 showing theparts assembled to form a comparatively small square column.

Figure 5 is a detail showing a front elevation of the attaching bar withother parts omitted.

Figure 6 is a similar view showing the back of the bar.

Figure 7 is a view showing an end elevation of the'bar.

Figure 8 is a perspective View illustrating the attaching bar. y

Figure 9 is a, View illustrating one of the side plates of the form withparts broken away.v

Figure 10 is a sectional plan similar to that shown in Figure 2 withparts broken away, and illustrating extension sections used with theyside plates.

Figure 11 is a detail illustrating an angle clip used with the attachingbars.

Figure 12 is a view looking toward Vthe opposite side of the clip.

Figure 13 is a detail illustrating a filler block attached to an end ofone of the sections of th form, andrwith parts broken away.

Figure 14 is a section through two of the sections of the formillustrating means for connecting the sections.

Figure 15 is a detail showing one of the connecting studs with a slottherethrough.

Figure 16 is a detail showing a key in a slot in a stud with part or"the stud broken away and shown in section.

Figure 17 is a side elevational View showing the lower end of a columnform with parts broken away and illustrating a shoring single wedge atthe lower end of a column form.

Figure i8 is a plan View of a column form with part broken away showingthe shoring wedge.

Figure 19 is a cross section through the shoring wedge taken on linelll-I9 of Figure 1B.

Figure 20 is a similar section taken on line 'Z0-20 of Figure 18.

Figure 21 is also a similar section taken on line 2I-2I of Figure 18.

Figure 22 is a view showing a front elevation of the upper section ofthe shoring wedge with parts omitted and parts broken away.

Figure 23 is a similar view showing the lower member of the wedge.

Figure 24 is a view showing a corner of the upper section o the shoringwedge with an adjusting angle bar extending therefrom and with partsbroken away.

Figure 25 is a similar view of the lower section of the wedge with partsbroken away and parts omitted.

Figure 26 is a perspective view with parts broken away illustrating therelative positions of the upper and lower sections of the shoring singlewedge.

Figure 27 is a detail illustrating an extension at the upper end of theform.

Figure 28 is a view showing a side elevation of the upper end of a formshowing a plurality of extension members as shown in Figure 27 and withparts broken away.

Figure 29 is a view showing a side elevation of one end of a form withextension members secured thereto by countersunk head studs, and withparts broken away.

Figure 30 is a cross section through one side of a form taken on line-38 of Figure 28.

Figure 3l is a detail illustrating a corner of a side of the form shownin Figure 28 showing an opening to accommodate an extension member.

Figure 32 is a detail illustrating an extension member with clip anglesin the ends thereof and with parts broken away.

Referring now to the drawings wherein like reference characters denotecorresponding parts the adjustable column form of this inventionincludes, primarily side plates I8, attaching bars I I, holding platescr clip angles I2, studs i3, keys I4, shoring wedge sections l5 vand IG,and eX- tension members I1.

The side plates I0 are reinforced by angles 29 and 2| at the sides,T-bars 22 intermediate of the ends, and anges 23 and 24 at the upper andlower ends, respectively. The outwardly extending legs' of the angles 28and 2| are provided with stud holes 25 and 26, respectively, and theanges 23 and 24 are provided with stud holes 21 and 28 and nail holes 29and 39, respectively.

The width of the side plates I8 corresponds with that of a commoncolumn, however, when it is desired to cast larger columns extensionplates 3| with angles 32 and 33 at the sides may be used and theoutstanding legs of the angles are provided with stud holes spaced. tocorrespond with the holes of the angles 2li and 2| so that they may besecured in position by the studs and keys as illustrated in Figure l0.

The attaching bars I I are formed as shown in Figures 5 to 8, inclusive,with a web 34 on one side and ribs 35, 35 and 31 on the other, and withopenings 38 between the ribs and lugs 39 and 48 on a head 4| at one end.As shown in Figures 2, 3, and 4, the head 4| is positioned against theinner surface of the outstanding legs of the angles 2G and 2| with thelugs 39 and 48 in the holes therein, and the holding plates I2 arepositioned against the ribs and outer surfaces of the angles, and theseparts are clamped together 'oy the studs I3 and keys I4. The plates i2are provided with flanges 42 having lugs 43 and studs 44 thereon and thestuds 44 are provided with slots 45 to receive the keys I4. The clipangles or plates I2 are also provided with openings 46 that registerwith the openings 38 in the bars II.

The studs, as shown in Figures 15 and 16, are formed with heads 21 andslots 48 extend through the shank portions thereof which receive thekeys I4. In assembling the forms the studs are placed through the holesand the keys are driven into the slots so that the parts are positivelysecured together, and when taking the forms down it is only necessary totap the keys on the small ends to release the parts.

Figure 13 illustrates a wood ller or anchoring block 49 at the end of aside plate and the block is secured in place by nails 5I) with the sideplate secured thereto by nails 5I, and in Figure 14.- the ilange 24 ofone side plate is secured to the flange 23 of another by the studs |3and keys I4, The side plates may be attached together, or to wood blocksas may be desired.

The shoring wedge elements at the lower end of the column forms areillustrated in Figures 18 to 26, inclusive, wherein the base flange 52of the lower section I6 is secured to the concrete door 53 by bolts 54,and the section is formed with end ribs 55 and intermediate ribs 56. Theupper surfaces of the ribs slope downwardly from the inner walls of thesections and the intermediate ribs 56 are provided with studs 51 thathave key openings 58 therein. The upper section I5 is formed with anoutwardly extending web 59 and, as illustrated in Figure 22, thissection is provided with tabs 60 and 6| on the ends of webs 62 and 63,respectively, that extend downward over the lower section, and the endsof the tabs are provided with holes 64 and 65 through which the studs 51extend. The upper and lower sections are secured together by the studswith the keys I4 therein. The web 59 of the upper section isy alsosecured to the lower ange 24 of the side plate I0 by studs I3 and keys|4.

The shoring wedge elements are also adjustable with the form and one endof each of the upper sections I5 is provided with an outwardly extendingangle bar 66 having stud holes 61 therein, and the angle bars of onesection are secured to the adjoining sections by bolts 68 with keys 69,as shown in Figure 18. The inner ends of the angle bars 66 are providedwith the anges 10 having lugs 1| thereon that are positioned in openings12 in the vertical legs of the sections I6 when the parts are assembled.The bolts 58 extend through the holes 61 in the angles 6B and throughholes 13 in the tabs 60 and 14 in the vertical webs 15 of the angles I5.The lower edges of the webs 62 and 53 are inclined to correspond withthe upper edges of the ribs 55 and 56 of the lower section, and the web53 of the upper section and the base 52 of the lower section areprovided with nail holes 16 and 11, respectively.

The forms may also be provided with extension members I1 as shown inFigures 27 to 32, inclusive, and these are formed with angles havingstud holes 18 in one leg and nail holes 19 in the other and the ends areprovided with clip angles and 8| with stud holes 82 in the sides thereofand holes 83 in the ends. In this design the end flanges 84 of the sideplates 85 are provided with openings 85 through which the members |1 eX-tend, and the flanges 81 and 88 at the edges of the side plate areprovided with countersunk openings 89 and 90 respectively, to receivethe countersunk heads of stud 9| which have slots 92 to receive keys 93,similar to the keys I4. The

stud holes in the intermediate flanges of the side plates are notcountersunk as they receive the studs I3 as shown. The extension membersmay be mounted on the ends of the side plates as shown in Figure 28 withthe upper ends secured to a member 94 by screws 95 and boards 96 may besecured thereto with the inner surfaces flush with the inner surface ofthe side plate 85.

The forms may, therefore be assembled in various combinations to formcolumns of different shapes and sizes and the parts may readily be setup and also readily dismantled.

It will be understood that other modifications may be made in the designand arrangement of the parts without departing from the spirit of theinvention.

What is claimed is:

1. An adjustable form for concrete columns comprising a plurality ofside plates having permanently attached angles on the side edges andflanges at the ends with spaced holes in outstanding legs of the anglesand also in the flanges at the ends, removable attaching bars positionedin holes in the outstanding legs of the angles and having openingstherein, holding plates with flanged ends positioned against theattaching bars and outstanding legs of angles of adjoining side plates,and studs with keys therethrough clamping the side plates togetherthrough the said attaching bars and holding plates.

2. An adjustable form for concrete columns comprising a plurality ofrectangular-shaped side plates with flanges at the sides and ends andhaving openings in the flanges, attaching bars removably mounted on theflanges of the side plates, holding plates with flanged ends positionedagainst the attaching bars and flanges of adjoining side plates, andstuds with keys.

therethrough clamping the side plates together through the saidattaching bars and holding plates.

3. An adjustable form for concrete columns comprising a plurality ofside plates having permanently attached angles on the side edges, T-barsintermediate of the edges and flanges at the ends with holes inoutstanding legs of the angles and also in the flanges, removableattaching bars having lugs positioned in the holes of the outstandinglegs of the angles and having ribs thereon with openings between theribs, holding plates with flanged ends positioned against the attachingbars and outstanding legs of angles of adjoining side plates, studshaving heads and slots through the shanks thereof positioned through theholding plates and attaching bars, and tapering keys in the slots of thestuds clamping the parts together.

4. Attaching bars for metal concrete forms having side and end plateswith flanges having spaced bolt holes therein on the edges, comprisingribbed plates with perpendicularly positioned heads with studs on theheads positioned to register with the bolt holes of the flanges of theside and end plates and having spaced bolt holes between the ribs.

5. Attaching bars for metal concrete forms having side and end plateswith flanges having spaced bolt holes therein on the edges, comprisingribbed plates with perpendicularly positioned heads with studs on theheads positioned to register with the bolt holes of the flanges of theside and end plates and having spaced bolt holes between the ribs, andholding plates positioned against the ribs of the said ribbed plates and6 overlapping flanges of the said side and end plates.

6. In a collapsible and adjustable concrete form, the combination whichcomprises side plates having flanged ends with angles having outwardlyextended perforated flanges secured to the side edges and withlongitudinally disposed T-bars permanently secured to the plates and p0-sitioned midway between the angles on the side edges thereof providingan elongated shallow tray with a reinforcing member extendedlongitudinally through the center, attaching bars having perforatedflanges extended at right angles from the sides of said plates, clipangles positioned to connect the angles on the sides of the plates andattaching bars, and bolts securing the said clip angles and attachingbars to the angles on the sides of the plates.

7. In a collapsible and adjustable concrete form, the combination whichcomprises side plates having flanged ends with angles having outwardlyextended perforated flanges secured to the side edges and withlongitudinally disposed T-bars permanently secured to the plates andpositioned midway between the angles on the side edges thereof providingan elongated shallow tray with a reinforcing member extendedlongitudinally through the center, attaching bars having mounting plateswith studs extended from the sides thereof on one of the ends thereof,said studs positioned to register with the perforations of the flangessecured to the side edges of the plates and said attaching bars havingperforated flanges and extended at right angles from the sides of saidplates, clip angles positioned to connect the angles on the sides of theplates and attaching bars, and bolts securing the said clip angles andattaching bars to the angles on the sides of the plates.

8. In a collapsible and adjustable concrete form, the combination whichcomprises side plates having flanged ends with angles having outwardlyextended perforated flanges secured to the side edges and withlongitudinally disposed T-bars permanently secured to the plates andpositioned midway between the angles on the side edges thereof providingan elongated shallow tray with a reinforcing member extendedlongitudinally through the center, attaching bars T-shape in crosssection having webs with perforated ilanges extended from one edge andfrom both sides of the webs and said flanges having spaced ribs on thesurfaces opposite to the surfaces from which the webs extend and alsohaving mounting extensions with studs thereon at one end and said studspositioned to register with perforations of the flanges on the sides ofthe plates, clip angles positioned to connect the angles on the sides ofthe plates and attaching bars, and bolts securing the said clip anglesand attaching bars to the angles on the sides of the plates.

TAKEO SATO.

REFERENCES CITED The following references are of record ln the ille ofthis patent:

UNITED STATES PATENTS Number Name Date 779,319 Russell Jan. 3, 1905975,242 Higgins et al Nov. 8, 1910 1,331,096 Eaches Feb. 17, 19201,640,997 Hollister Aug. 30, 1927 2,017,553 Troiel Oct. 15, 19352,516,318 Hawes July 25, 1950

